MIME Database / Compare Formats / JPEG-XR-HEIF vs JPEG-XR-Sequence

JPEG-XR-HEIF vs JPEG-XR-Sequence Format Comparison

JPEG-XR-HEIF

JPEG XR Image (HEIF Container)

image/jxra

JPEG XR Image Sequence (HEIF Container)

image/jxrs

JPEG-XR-Sequence

A complete technical comparison of JPEG XR Image (HEIF Container) and JPEG XR Image Sequence (HEIF Container) — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

Equal browser support

Feature Support

Feature	JPEG-XR-HEIF	JPEG-XR-Sequence
Transparency (Alpha)	Yes	Yes
Animation Support	✕ No	Yes
Progressive Loading	Yes	Yes
HDR Support	Yes	Yes
EXIF Metadata	Yes	Yes
ICC Color Profile	Yes	Yes

JPEG XR Image (HEIF Container)

image/jxra

Extension

.jxra

Container HEIF / ISOBMFF (ISO/IEC 23008-12 / Annex F of ITU-T T.832)

Compression Lossy / Lossless

Algorithm

JPEG XR (Lapped Biorthogonal Transform)

Color Depth 8-bit, 16-bit, 32-bit (Float)

Developed by ISO/IEC JTC 1 / ITU-T

Released 2019

Magic Bytes

XX XX XX XX 66 74 79 70 6A 78 72 41

Full JPEG-XR-HEIF reference →

JPEG XR Image Sequence (HEIF Container)

image/jxrs

Extension

.jxrs

Container HEIF / ISOBMFF (ISO/IEC 23008-12 / Annex F of ITU-T T.832)

Compression Lossy / Lossless

Algorithm

JPEG XR (Lapped Biorthogonal Transform)

Color Depth 8-bit, 16-bit, 32-bit (Float)

Developed by ISO/IEC JTC 1 / ITU-T

Released 2019

Magic Bytes

XX XX XX XX 66 74 79 70 6A 78 72 53

Full JPEG-XR-Sequence reference →

Browser Support Comparison

Browser	JPEG-XR-HEIF	JPEG-XR-Sequence
Chrome	✕	✕
Firefox	✕	✕
Safari	✕	✕
Edge	✕	✕
IE (Legacy)	✕	✕

JPEG-XR-HEIF

JPEG-XR-HEIF Strengths

Combines the deep color (32-bit float) and mathematically lossless compression of JPEG XR with the robust metadata architecture of HEIF
Allows grouping multiple images, exposure brackets, or focal stacks into a single file collection

Limitations

Practically non-existent software and operating system support compared to standard HEIC or legacy JPEG XR (.jxr)
Zero web browser support, rendering it entirely unsuitable for public web deployment
Eclipsed by modern standards like AVIF and JPEG XL which offer superior compression with much broader industry backing

JPEG-XR-Sequence

JPEG-XR-Sequence Strengths

Supports 32-bit floating point HDR color depths natively across an entire animation sequence
Combines the advanced coding efficiencies of JPEG XR with the sequence timing and metadata framework of HEIF
Shares frame data structures allowing for optimized storage of burst photography

Limitations

Extremely rare format with essentially no mainstream software adoption
Zero web browser support
Overshadowed heavily by HEVC (HEIC sequences) and AV1 (AVIF sequences) which offer superior compression and broader hardware decoding support